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A comparison of wi-fi and wimax with case studies - Florida State ...

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area can have a maximum <strong>of</strong> eight non-overlap channels to use, so the overall b<strong>and</strong><strong>wi</strong>dth<br />

capacity is 8*54 = 432 Mbps. [08][09]<br />

Term<br />

St<strong>and</strong>ard<br />

Table 3- 2 Capacities for 802.11a/b/g<br />

802.11a 802.11b 802.11g<br />

B<strong>and</strong> 5 GHz 2.4 GHz 2.4 GHz<br />

Available channels 12 11 11<br />

B<strong>and</strong><strong>wi</strong>dth capacity 432 Mbps 33 Mbps 162 Mbps<br />

Coverage 75 ft. 125 ft. 155 ft.<br />

Datarate 54 Mbps Max. 11Mbps 54 Mbps<br />

Modulation OFDM DSSS<br />

Channel Number<br />

Table 3-3 IEEE 802.11b/g Channel Used for Different Countries<br />

Frequency<br />

(GHz)<br />

Japan<br />

12<br />

North<br />

America<br />

Country Name<br />

ERP-OFDM<br />

DSSS-OFDM<br />

Europe France Spain<br />

1 2.412 X Y Y X X<br />

2 2.417 X Y Y X X<br />

3 2.422 X Y Y X X<br />

4 2.427 X Y Y X X<br />

5 2.432 X Y Y X X<br />

6 2.437 X Y Y X X<br />

7 2.442 X Y Y X X<br />

8 2.447 X Y Y X X<br />

9 2.452 X Y Y X X

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